On a certain day, John celebrated his birthday. Two days later, his older twin brother Jacob celebrated his birthday.

Is this even possible? How can it be?

Prove that twice of ten is the same as twice of eleven.

You order chicken wings at KFC in the boxes of 6, 9 and 20. What is the largest number of wings that you cannot obtain by buying in any combination of the boxes?

Samuel was out for a walk when it started to rain. He did not have an umbrella and he wasn't wearing a hat. His clothes were soaked, yet not a single hair on his head got wet. How could this happen?

Find the number of squares in the below picture

A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?

What number when divided in half becomes zero?

I have a head like a cat and feet like a cat, but I am not a cat. What am I?

Can you decipher the below rebus?

PBLUESAISNUERSES

You need to climb ten stairs. At every stair, you can either take one step up or you can jump two steps up.

In how many different ways you can climb 10 stairs?